Locomotive draft appliance



A. K KUSEBAUCH.

LOCOMOTIVE DRAFT APPLIANCE. y APFLCATIUN FILED MAR.10.I9I9. 1,356,824,Patented Oct. 26, 1920.

- d 's 2 5% S u lL A V A s dim ATTORNEYS.

UNITED STATES PATENvT OFFICE.

ANTON K. KUSEBAUCH, OFVIITTSBURGH, PENNSYLVANIA. ASSIGNOR TO LOCOMOTIVEBTOKEB COMPANY, 0F PITTSBURGH. PENNSYLVANIA, A CORPORATION 0F PENN-SYLVANIA.

Specification of Letters Patent.

LOCOMOTIVE DRAFT .APIIJIAVN'CEA Patented om. 2c, 1920,.

Application tiled March 10, 1919. Serial No. 281,714.

To all whom u may concern:

Be it known that I, A. K; Knsnanoina citizen orf the United States,residing 1n Pittsburgh, count .of Allegheny, and State of Penne venia,lave invented certain new and use ul Improvements in Locomotive DraftAppliances, of which the following is a specification. n

Thls invention relates to locomotive draft appliances and particularlyto that type comprising a blower fan operated by steam turbine or otherform of motor means.

It has for one of its primary objects the provision of improved meansfor cooling the driving shaft and bearings, an improvement partlcularlyuseful either where the whole appliance is placed entirely within thesmoke box o1' where the motor is leu-,ated exteriorly of the smoke box,with the driv ing shaft extending into the interior thereof andsupported by bearings.

My invention also contemplates the provision of a simple and compactarrangement of draft appliance provided with improved meansV formaintaining a circulation of cooling fluid therethrough.

obtain the foregoing. together with such other objects as mayhereinafter appear, by means of a construction which I have illustratedin preferred form in the accompanying drawings, wherein- Figure 1 is alongitudinal section through a locomotive smoke box showingv theapplication of my improvements; and Fig. 2 is a longitudinal sectionthrough the draft upA pliance drawn on an enlarged scale to more clearlillustrate the parts.

Re erring now to the drawings, the smoke box is indicated as avvhole bythe reference letter A, and the draft appliance comprises a blower fan7, a steam turbine or other form of motor 8, and u. driving shaft-9` ALBshown. the draft appliance is located entirely within the smoke box. Theblower fn operates in the usual manner drawing the products ofcombustion from the fire box through the fines into the smoke box` fromwhich they exhaust through the stack 10. The steam turbine also operatesin the usual manner, exhaust steam being supplied to the interiorthereof through the passageM way 11, the steam being conveyed 'to suchpassageway by a pipe 12 or other suitable connection, diagrammaticallyillustrated in Fig. 1. After passing through the turbine front bearing18 for the shaft 9, the said head Y being spaced away from the drum 15so as to provide a balancing chamber 19. The interior of thc housing 17opens into chamber 19. The drum l5 has a loose tit in the casing 14 soto provide an annular clear-- ance space 2U confier-ting chamber 19 withthe steam sparo of tluA turbine. 'lhe rear end of the casing 1.4 isclosed by a houd 2l from which the rear bearing 2! of the shaft 9 issupported by means of brackets Q3.

The parts are cooled as follows:

The shaft 5) is provided with a central. aperture or opening Q4. suchopening eX- tcndiug entirely through the shaft und talgrishiugcommunication between the hous ing` 1T and the suction sparo in theinterior I .of tho blower fun T, steam entering the chamber 19 throughthe clearance space 2U partially condenses, and when such chambor isiilled or partially filled with saturated steam, the suction produced bythe faniin normal operation will draw a small stream of steam or waterthrough the aperture 24, thus cooling the shaft and its bearings. Thefluid thus drawn through the shaft is can ried with the products ofcombustion and is discharged therewith. T he front bearing is alsoexteriorly cooled by ay water that nmy collect in chamber 19 andl in theinterior of the housing i7. Fluid will be drawn through 'in volumessufficient, to adequately cool the shaft and its parts, and the exhauststeam particularly after it has been delivered to the turbine, willpractically become saturated or tend to condense very rapidly.

In order to assist in cooling the rear end of the shaft adjacent to thebearing 22. which portion of the shaft is nearest the hottest place` lprovide the shaft with a plurality of radiating tangos or fins 25.

It will be seen from the foregoing that l have provided u simplearrangement for cooling the shaft und. its bearings, which requires noextra parts and utilizes theV suction croateo vf operatin r the fan formaintaining the circulation o cooling fluid.A The life of 4 theapparatus is greatly extended f d the cooling arrangement is of such-aracter as to lend compactness and sim- 'plieitlio the whole appliance.6 .I c im:

shaft, and means where l0 fan creates a How o y the suction of the f theactuating fluid along the shaft vto cool the same. p 2. A locomotivedraft appliance comprising in combination a blower means, a motor foroperating the same 1.5 steam, and aechambe through the shaft forutilizing exhaust r for supplying fluid Cooling'purposes.

3. A locomotive draft appliance comprising in combination a blowermeans, a motor utilizing exhaust steam for operating the blower, ahollow shaft, a chamber for holding steam with which the hollow shaftcommunicates, and means for passing cooling fluid through the shaft.

4. A locomotive draftappliance comprising in combintion a blower means,a steam actuated motor for operating the blower, a hollow shaft andmeans for passing cooling fluid from the Source of vsteam supply for themotor through said hollow 'shaft In testimony whereo I have hereuntosigned my name.

` ANTON K. KUSEBAUCH.

